Alert archive / Colorado / Flash Flood Watches
Flash Flood Watches in Colorado, 2021
66 flash flood watches in 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of flash flood watches reaches back to 2005.
Flash Flood Watches by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Flash Flood Watches
- 66
- Busiest month
- July35 flash flood watches
- Busiest day
- August 1, 20215 flash flood watches
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 4:19 AM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 3 more | 18 hr |
| May 19, 11:14 AM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 4 more | 10 hr |
| May 30, 3:31 AM MDT | Flash Flood Watch | PUB | Alamosa, Baca, Bent, Chaffee, Costilla, Custer and 6 more | 20 hr |
| May 31, 3:55 AM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 3 more | 16 hr |
| Jun 5, 2:29 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 5 hr |
| Jun 6, 12:15 PM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 2 more | 6 hr |
| Jun 19, 1:04 PM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 4 more | 7 hr |
| Jun 26, 2:16 PM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 4 more | 9 hr |
| Jun 26, 2:24 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 83 min |
| Jun 29, 11:22 AM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 9 hr |
| Jun 30, 12:22 PM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Costilla, Custer, El Paso, Fremont and 5 more | 36 hr |
| Jun 30, 2:35 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 5 hr |
| Jul 1, 8:46 AM MDT | Flash Flood Watch | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 7 more | 12 hr |
| Jul 1, 11:34 AM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 6 hr |
| Jul 2, 1:23 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 6 hr |
| Jul 3, 2:04 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 60 min |
| Jul 5, 2:39 AM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 4 more | 18 hr |
| Jul 5, 3:13 AM MDT | Flash Flood Watch | BOU | Boulder, Grand, Jackson, Larimer, Summit | 21 hr |
| Jul 5, 4:28 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 12 min |
| Jul 5, 5:52 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 4 hr |
| Jul 6, 2:46 AM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 5 more | 22 hr |
| Jul 8, 4:04 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 111 min |
| Jul 9, 2:44 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 3 hr |
| Jul 13, 11:51 AM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 3 hr |
| Jul 13, 4:59 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 3 hr |
| Jul 14, 2:19 AM MDT | Flash Flood Watch | GJT | Archuleta, Dolores, Eagle, Garfield, Gunnison, Hinsdale and 11 more | 18 hr |
| Jul 14, 3:14 AM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 6 more | 18 hr |
| Jul 20, 12:37 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 8 hr |
| Jul 21, 2:42 AM MDT | Flash Flood Watch | GJT | Archuleta, Dolores, Eagle, Garfield, Gunnison, Hinsdale and 10 more | 21 hr |
| Jul 21, 2:57 AM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 5 more | 19 hr |
| Jul 21, 3:18 AM MDT | Flash Flood Watch | BOU | Boulder, Grand, Jackson, Larimer | 17 hr |
| Jul 21, 1:44 PM MDT | Flash Flood Watch | GJT | Archuleta, Dolores, Eagle, Garfield, Gunnison, Hinsdale and 10 more | 34 hr |
| Jul 22, 2:54 AM MDT | Flash Flood Watch | PUB | Chaffee, Conejos, Lake, Mineral, Rio Grande, Saguache | 18 hr |
| Jul 22, 1:50 PM MDT | Flash Flood Watch | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more | 36 hr |
| Jul 22, 2:15 PM MDT | Flash Flood Watch | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more | 30 hr |
| Jul 23, 3:06 AM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 5 more | 19 hr |
| Jul 24, 3:51 AM MDT | Flash Flood Watch | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 17 hr |
| Jul 24, 3:53 AM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 7 more | 17 hr |
| Jul 25, 1:02 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 7 hr |
| Jul 26, 12:03 PM MDT | Flash Flood Watch | GJT | Delta, Dolores, Eagle, Garfield, Mesa, Moffat and 6 more | 10 hr |
| Jul 28, 2:08 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 8 hr |
| Jul 28, 2:28 PM MDT | Flash Flood Watch | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 34 hr |
| Jul 28, 2:28 PM MDT | Flash Flood Watch | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 58 hr |
| Jul 29, 2:03 PM MDT | Flash Flood Watch | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 10 more | 55 hr |
| Jul 30, 3:18 AM MDT | Flash Flood Watch | PUB | Chaffee, Lake, Saguache | 20 hr |
| Jul 30, 3:44 AM MDT | Flash Flood Watch | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 43 hr |
| Jul 30, 1:48 PM MDT | Flash Flood Watch | PUB | Alamosa, Baca, Bent, Chaffee, Conejos, Costilla and 13 more | 40 hr |
| Aug 1, 3:04 AM MDT | Flash Flood Watch | PUB | Conejos, Mineral, Rio Grande, Saguache | 18 hr |
| Aug 1, 3:05 AM MDT | Flash Flood Watch | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 18 hr |
| Aug 1, 1:25 PM MDT | Flash Flood Watch | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 35 hr |
| Aug 1, 2:04 PM MDT | Flash Flood Watch | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more | 32 hr |
| Aug 1, 2:47 PM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 7 more | 32 hr |
| Aug 2, 2:30 PM MDT | Flash Flood Watch | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 29 hr |
| Aug 2, 2:54 PM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more | 31 hr |
| Aug 3, 3:41 AM MDT | Flash Flood Watch | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more | 18 hr |
| Aug 15, 1:05 PM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 3 more | 7 hr |
| Aug 16, 5:44 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 2 hr |
| Aug 17, 1:10 PM MDT | Flash Flood Watch | GJT | Delta, Dolores, Eagle, Garfield, Gunnison, Mesa and 7 more | 59 hr |
| Aug 30, 2:17 PM MDT | Flash Flood Watch | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 58 hr |
| Aug 31, 3:11 AM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 6 more | 42 hr |
| Sep 3, 3:27 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 47 min |
| Sep 28, 12:06 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 9 hr |
| Sep 29, 8:10 AM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 31 min |
| Sep 29, 11:55 AM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 11 hr |
| Sep 30, 2:42 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 6 hr |
| Oct 2, 2:34 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Eagle County37
- Garfield County37
- Moffat County37
- Pitkin County37
- Rio Blanco County37
- Routt County37
- Saguache County22
- Chaffee County21
- Alamosa County19
- Costilla County19
- Custer County19
- Fremont County19
- Huerfano County19
- Las Animas County16
- Pueblo County15
- Dolores County14
- Montrose County14
- Ouray County14
- San Miguel County14
- Lake County13
- Gunnison County13
- Archuleta County12
- Hinsdale County12
- La Plata County12
- Montezuma County12
- San Juan County12
- Mesa County11
- Delta County11
- Conejos County10
- Mineral County10
- Rio Grande County10
- Boulder County7
- Larimer County7
- Teller County6
- Grand County6
- Jackson County6
- Clear Creek County5
- Gilpin County5
- Jefferson County5
- Park County5
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.